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Thoroughbred Diesel has been your online performance headquarters since 2002. We know how to get the most performance out of your pickup truck and offer all of today's most popular diesel performance products.

Attitude Performance

Department

The mission at Attitude Performance Products is to provide superior parts made of the highest quality materials available. They do not compromise; and provide the best products in the industry. Stronger, faster, better. Attitude gives authority to your engine! Attitude Performance Products takes pride in promoting internal research and development, tested and proven by external sources. Their design solutions bring new excitement for diesel enthusiasts. With the rise of high-performance engines, APP's contributions to the industry will help you stay ahead of the competition. Attitude is focused on quality. Stated very simply, it improves reliability. Their products are Made in America from the finest materials with the finest workmanship.

Attitude Performance Products are all about providing solutions for Diesel enthusiasts. APP’s contributions to the industry make great trucks even better. Their innovative technologies give your ride authority and reliability.